DE384389C - Induction counter in which the excitation winding of a drive core is connected in parallel to a series resistor of the other drive core - Google Patents

Description

Induction counter in which the excitation winding of a drive core closes a series resistor of the other drive core is connected in parallel. At a The armature winding is the known ampere-square hour meter based on the dynamometric principle connected in parallel to a resistor that is in series with the main current winding is in the consumption drink circle. Another known meter of this type is the armature winding is connected in parallel to the main current winding. There are too Ampere-square hour meter based on the induction principle, in which one of the both proportional to the consumption current and shifted in phase with respect to each other Drive fields is generated by transformation. It does this in a number of ways. Either a drive core is excited by the consumption current in the vicinity of the armature disk with one that sits on the side and wraps around only part of the core cross-section Short-circuit ring provided, or the excitation windings of two drive cores are from fed to the secondary windings of a transformer, the primary winding of which is the Consumption current flows through, or the excitation winding of the second drive core is from a secondary winding to the first drive core excited by the consumption current fed. In all of these cases, the armature rotation is magnetically dampened.

It is also an induction counter from the American patent 800375 known, in which the excitation winding of one drive core is connected in parallel is one in series with the excitation winding of the second drive core in the consumption circuit lying resistance. But magnetic damping is not used in this meter, whose torque is proportional to the anchor speed, but the air damping, the rotation of which is proportional to the square of the anchor speed; it is therefore no square hour meter, but an ampere hour meter.

If one provides such a counter with a according to the invention Magnetic damping instead of air damping, you get an ampere-square hour meter, which before the known induction counters of this type a lower dependency of its Has indications of changes in frequency ahead. The reason for this appearance will be found in the fact that the instinctual field of the instinctual core lying in shunt with the resistance decreases with increasing frequency and thereby the increase in torque through counteracts the currents in the armature disk, which become stronger with increasing frequency. In the known dynamometric ampere-square hour meter with an analog circuit this beneficial balancing effect cannot occur because there are no induced currents play along.

The same advantage arises if you use this circuit on a Volt square hour meter uses the induction principle. The excitation windings the drive shafts are then called tension windings executed, one is connected in parallel to a series resistor of the other The device is connected to the consumption voltage.

Iran uses a permanent magnet instead of a permanent magnet to dampen the anchor electromagnet excited by the consumption voltage, o one obtains a small motor, which can be used as a replacement for a clock to drive tariff devices, practical since its rotation speed depends on fluctuations in span-iiting and frequency is independent.

In your counter of the above-mentioned American patent 8003; j is the drive core, the excitation winding of which is a series resistor of the other The drive core is connected in parallel, with '3ektinclär' -iclciti-igen near the Anchors provided, which can be regulated and to influence the field should serve. The same means can also be used in the counter according to the present invention applied «to earth.

Claims (1)

PATENT CLAIMS::. Induction counter, called the excitation winding one drive core parallel to a series resistor of the other drive core is switched, characterized by magnetic damping of the armature, to your "!." corner, Anipere-square hours or volt-square hours using the "Inessen counter". Induction counter according to claim I i-iit eirein for the measurement of volt square -:;. un the suitable drive systems, characterized by a damping magnet for the anchor.